SEM of Ca/Al(OH)5 nanoparticles synthesized from natural materials

The dataset associated with the Figure presents high-resolution Scanning Electron Microscopy (SEM) images of the synthesized Ca/Al(OH)₅ nanoparticles. SEM was employed to examine the morphology, microstructure, and hierarchical organization of the nanoparticles, providing critical insights into their potential for hydrogen storage applications.Data Generation and Experimental BackgroundSEM imaging was performed on carefully prepared samples of Ca/Al(OH)₅ nanoparticles. Prior to imaging, the nanoparticles were dispersed onto conductive substrates and coated with a thin layer of gold to prevent charging effects. Micrographs were captured under high-vacuum conditions at multiple magnifications to ensure both nanoscale resolution and statistical representativeness of the observed structures.The primary objective of SEM analysis was to identify structural features that influence hydrogen adsorption, including particle shape, size distribution, porosity, and connectivity between structural elements.Description of Data Content and File StructureThe SEM dataset consists of micrographs capturing the dual hierarchical morphology of the nanoparticles:Lamellar (sheet-like) structures: Thin, plate-like formations with an average thickness of 22–28 nm, providing extensive accessible surface area for hydrogen adsorption. These sheets are distributed throughout the nanoparticle matrix and often stack in a partially overlapping manner.Channel-like (cylindrical/tubular) structures: Interconnected channels or tubes with diameters ranging from 76–100 nm, forming continuous pathways for hydrogen diffusion into the interior of the nanoparticles.